$ git clone -n http://git.inferitos.ru/rpms/perl-MIME-Base64 /var/lib/mock/inferit-9_4-aarch64-bootstrap-build-57841-126565/root/chroot_tmpdir/scmroot/perl-MIME-Base64
Cloning into '/var/lib/mock/inferit-9_4-aarch64-bootstrap-build-57841-126565/root/chroot_tmpdir/scmroot/perl-MIME-Base64'...
$ git fetch origin changed/i9c/perl-MIME-Base64-3.16-4.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/perl-MIME-Base64
 * [new tag]         changed/i9c/perl-MIME-Base64-3.16-4.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07d3001 import perl-MIME-Base64-3.16-4.el9